Now it is very bright as 5.1 mag (Dec. 1, Chris Wyatt). It will approach to Earth down to 0.08 a.u. in December, and it is expected to brighten up to 3 mag. In the Northern Hemisphere, it locates low until November, but it stays observable in excellent condition after December. In the Southern Hemisphere, it is observable in good condition until mid December when it brightens up to 3 mag. But it becomes unobservable after that.

New bright comet discovered by three amateur comet hunters. Now it is 8.9 mag (Nov. 20, Osamu Miyazaki). It brightened rapidly from 10 mag up to 8 mag just after the discovery. But after that, the brightness evolution became slow. In the Northern Hemisphere, it can be observable in the extreme low sky in the evening at 5.5-7 mag from around Dec. 5 to around Dec. 15. In the Southern Hemisphere, it is not observable now. But it will appear in the morning sky at 14 mag in February, then it stays observable in good condition while the comet will be fading gradually.

Now it is bright as 9.8 mag (Nov. 30, Seiichi Yoshida). It stays 9-10 mag until January. In the Northern Hemisphere, it stays observable in good condition for a long time until it fades out. It locates low in the Southern Hemispehre.

Now it is 11.3 mag (Nov. 30, Seiichi Yoshida). It stays at 10-11 mag until winter. In the Northern Hemisphere, it stays observable for a long time until it fades out. But it stays extremely low. It will never be observable again in the Southern Hemisphere.

It brightened up to 7.7 mag in June (June 19, Juan Jose Gonzalez). Now it is fading. But it is still bright as 10.5 mag (Nov. 29, Chris Wyatt). In the Southern Hemisphere, it stays observable in good condition for a long time until the comet will fade out. In the Northern Hemisphere, it is not observable for a long time until autumn in 2019 when the comet fades out down to 16 mag.

Now it is 12.8 mag (Nov. 14, Sandor Szabo). It will be fading slowly after this. In the Northern Hemisphere, it will be getting higher gradually after this, and it will be observable in good condition. In the Southern Hemisphere, it is not observable until summer in 2019.

It brightened up to 6.8 mag in September (Sept. 17, Seiichi Yoshida). Now it is fading rapidly. It has already faded down to 11.3 mag (Nov. 30, Seiichi Yoshida). It is observable in excellent condition in the Southern Hemisphere. It locates low after this in the Northern Hemisphere.

Now it is 14.0 mag (Nov. 26, Chris Wyatt). It will brighten up to 10-11 mag in autumn in 2019. It stays observable in good condition for a while in the Southern Hemisphere. In the Northern Hemisphere, it stays extremely low for a long time.

Now it is 14.3 mag (Nov. 30, Seiichi Yoshida). It stays at 14 mag until winter. It is observable in excellent condition in the Northern Hemisphere. In the Southern Hemisphere, it is not observable until summer in 2019.

Now it is 13.5 mag (Nov. 14, Sandor Szabo). It will be observable at 13-14 mag for a long time from 2017 to 2018. It is observable in excellent condition until spring in the Northern Hemispehre. In the Southern Hemisphere, it will be hardly observable after this.

Now it is 14.5 mag (Aug. 16, P. Camilleri, H. Williams). It stays 15 mag from 2018 to 2019, and it will be observable for a long time in the Southern Hemisphere. In the Northern Hemisphere, it will never be observable again.

Now it is 13.9 mag (Nov. 8, Chris Wyatt). It will be fading after this. It stays observable in excellent condition for a while in the Southern Hemisphere. It locates somewhat low in the Northern Hemisphere.

It brightened up to 8.7 mag in July (July 18, Marco Goiato). Then it faded down to 12.3 mag in August (Aug. 29, Chris Wyatt). Now it is not observable. It will appear in the morning sky in late December.

Now it is 15.2 mag (Nov. 10, Kunihiro Shima). It will brighten up to 15 mag in winter. It is observable in excellent condition in the Northern Hemisphere. It is not observable at all in the Southern Hemisphere.

Now it is bright as 15.1 mag (Nov. 21, Artyom Novichonok). It stays 14 mag for a long time in 2019. In the Southern Hemisphere, it is observable in excellent condition. In the Northern Hemisphere, it is observable in low sky until early January, but it will be unobservable after that.

It brightened rapidly in outburst up to 6.9 mag (July 19, Maik Meyer). Then it faded down to 9.3 mag (Aug. 2, Katsumi Yoshimoto). It approached to Sun down to 0.2 a.u. in August, and it was expected to brighten up to 3 mag. However, it must have been already disintegrated. It appeared in the morning sky. But nobody could detect the comet except for Juan Jose Gonzalez. Juan Jose Gonzalez reported he detected the remnant visually at around 10 mag between Oct. 16 and Nov. 16.

Now it is 17.2 mag (Nov. 14, Kunihiro Shima). It is observable at 16.5 mag in good condition from autumn to winter. But it is fainter than this ephemeris recently. It locates somewhat low in the Southern Hemisphere.

It brightened up to 14.7 mag in early 2018 (Jan. 25, Catalina Sky Survey). Now it is fading slowly. Now it is 16.6 mag (Nov. 15, Toshihiko Ikemura, Hirohisa Sato). In the Northern Hemisphere, it stays observable in good condition for a long time until the comet fades out. It is never observable again in the Southern Hemisphere.

Now it is 17.2 mag (Nov. 14, Toshihiko Ikemura, Hirohisa Sato). It will brighten rapidly. It was expected to be observable at 15.5 mag in good condition in winter. But it is somewhat fainter than expected.

Now it is 17.0 mag (Nov. 21, Artyom Novichonok). It stays 16-17 mag for a long time until 2020. It is observable in good condition in the Northern Hemisphere. It is not observable at all in the Southern Hemisphere.

It brightened up to 7 mag from May to June in 2017. Now it is fading. It has already faded down to 16.0 mag (Sept. 30, J. Drummond). In the Southern Hemisphere, it stays observable for a long time after this. It will never be observable again in the Northern Hemisphere.

First return of a new periodic comet which brightened up to 17.5 mag in 2010. Now it is 17.0 mag (Nov. 29, Toshihiko Ikemura, Hirohisa Sato). It was expected to brighten up to 16.5 mag from November to December. But actually, it is a bit fainter than expected. It is observable in excellent condition in the Northern Hemisphere. It locates low in the Southern Hemisphere.

Now it is 17.0 mag (Nov. 27, MASTER-II Observatory, Tunka). It will be fading after this, and will be fainter than 18 mag in December. It is observable in good condition in the Northern Hemisphere. It is not observable in the Southern Hemisphere. Its cometary activity was observed on Mar. 26 (M. Mommert, D. Polishook, N. Moskovitz).

First return of a new periodic comet which brightened up to 16.5 mag in 2005. Now it is 17.7 mag (Nov. 30, Toshihiko Ikemura, Hirohisa Sato). It will be fading after this, and will be fainter than 18 mag in December. It locates low in the Southern Hemisphere.

Now it is 18.0 mag (Nov. 10, Toshihiko Ikemura, Hirohisa Sato). It brightened up to 16 mag in 2018 spring. It stays observable in good condition until 2019 spring when the comet will be fainter than 18 mag.

Now it is 17.2 mag (Nov. 30, Toshihiko Ikemura, Hirohisa Sato). It will be fading gradually after this, and it will be fainter than 18 mag in winter. In the Northern Hemisphere, it stays observable in good condition for a long time. In the Southern Hemisphere, it will never be observable again.

Now it is 17.2 mag (Nov. 29, Toshihiko Ikemura, Hirohisa Sato). It is observable at 17.5 mag until January, in good condition in the Northern Hemisphere. It locates very low in the Southern Hemisphere.

It brightened very rapidly up to 13.8 mag in August in 2017 (Aug. 22, Kunihiro Shima). Now it is 16.3 mag (Nov. 14, Kunihiro Shima). In the Northern Hemisphere, it stays observable in excellent condition after this. It stays extremely low in the Southern Hemisphere.

Now it is 17.1 mag (Nov. 28, Castelmartini). Although it is around the aphelion, it is observable at 17.5 mag in November, in good condition in the Northern Hemisphere. It locates very low in the Southern Hemisphere.

It was expected to be observable at 17.5 mag in good condition in winter in the Northern Hemisphere. But actually, it is so faint as 21.0 mag (Oct. 5, K. Sarneczky, et. al). It locates low in the Southern Hemisphere.

Peculiar asteroid moving along a cometary orbit. Now it is 16.7 mag (Nov. 18, G. Pascoli Observatory, Castelvecchio Pascoli). It is observable at 17.5 mag in good condition in November. It locates somewhat low in the Southern Hemisphere.